本文总结了油气企业信息工作管理经验,分析并阐述了如何"围绕中心、服务大局",做好新时期的信息管理工作.

神木气田应用井下节流、中低压集气模式,采用多层系开采,气井具有普遍产水的特点,目前计算节流器气嘴直径用的是纯气相条件下的计算公式,而液体通过气嘴时使气体有效过流面积减小,会造成实际产量比理论产量偏小,容易造成井筒积液无法排出.通过井下节流多相流模拟试验装置,模拟单相临界状态下,定气嘴直径d和节流嘴上游P1时出口气量Q;在P1不变条件下,加入不同比例的水进行测试,每组通过更换大直径气嘴,使出口气量达到初期给定气量Q,得出不同液气比条件下气嘴直径;最后对不同液量过节流气嘴需放大的气嘴直径比例进行拟合,并结合纯气相节流气嘴直径计算公式,优化出不同生产液气比条件下气嘴直径;通过现场分析评价,应用效果良好,解决了产液气井节流气嘴直径计算偏小问题.

由于液滴型临界携液模型计算简单且修正方便,一直以来都是产水气田工艺理论研究的重中之重.本文从临界携液模型原理出发,通过客观推导临界携液模型,深入认识这一理论工具手段.分析温度、压力、管径以及表面张力对临界携液模型的影响,并且通过数学工具灰色理论对各影响因素进行排序.由于临界携液模型只适用于高气液比气井,对低气液比模型本文也有所涉及并举例计算.

井下节流工艺能够防止水合物生成、降低井口压力、简化地面工艺流程等,但部分气井因井筒积液、出砂导致打捞困难,气嘴直径不适等无法正常生产.通过对神木气田井下节流器打捞失败原因进行分析,给出了优化节流器选型,研发应用平衡排水式节流器和节箍座落式节流器的技术对策,并针对气嘴直径偏大、偏小问题,给出了相应的优化方法,现场应用效果良好.

为了促进涡流排水采气技术在长庆气田的应用，对涡流工具工作机理及效果影响因素进行研究，建立几何模型及数学物理模型，应用Fluent软件进行数值模拟，优化工具结构，确定适用气井基本条件。研究结果表明，涡流工具有效实现了流体由紊流流态转变为二相层流流态，并可持续很长一段距离；螺旋角度是影响涡流工具气液分离效果的主要因素，角度为50°时效果最好；入口速度越大带液效果越好，速度大于17 m／s时气液分离效果变化不大。总体趋势为气液比越小，分离效果越好；井下涡流工具降低临界携液流量约25％，对套压大于8 MPa、产气量大于0．5×104 m3／d、井筒完好的低压弱喷气井适用。该研究成果为涡流工具的现场应用起到了促进作用。

In view of the situation where the produced gas of part upper paleozoic gas well of Sulige Gas Field is restricted in development due to the presence of hydrogen sulphide,by investigating desulfurization technologies at home and abroad, according to the characteristic of Sulige Gas Field,such as distribution of single well containing sulfur,decentralized desulphurization and low investment cost,etc,this paper preferred skid mounting design with iron oxide dry desulfurization technology,and carried out field tests with a market commissioned service mode,and carried out analysis and evaluation of test results and cost-effectiveness.The results show that the sulfur content of natural air containing sulfur in the wellhead can be less than 20 mg/m3 as after desulfurization of skid-mounting equipment,satisfying purify requirements.The average replacement cycle of desulfurizer is 34 days,all field test parameters can meet the design requirements,and skid-mounting technology design is reasonable,with a significant desulfurization effect.Test wells can be converted from shut-in status into desulfurization and purifying production state,thereby achieving significant economic benefits.(2 Tables,1 Figure,5 References)

Interwell gas lift process and test parameters are designed for Jingbian gas field based on the characteristics of high pressure gas wells and low-pressure gas wells with water production,continuous gas circulation theory,and the principle of simple and practical modification of the process.Gas lift tests have been conducted respectively with gas injection rates of 0.3 × 10 4 m 3 / d,0.5 × 10 4 m 3 / d,1.0 × 10 4 m 3 / d and 1.2 × 10 4 m 3 / d to probe for rational gas lift parameters and verify process feasibility.The results show that the process design is feasible;the gas lift response is the best with injection rate of 1.0 × 10 4 m 3 / d;friction loss is small,and gas well production is stable.Application of the new method in 10 wells has achieved good effects in water drainage and gas production,displaying remarkable economic benefit and application value.

气田开发进入中后期,气并不能建立压力、产量、气水比相对稳定的带水采气制度,需要采取助排措施生产。靖边气田采取了多种措施保证气井连续稳定带液生产,并不断试验新工艺新技术,力求为气田稳产提供技术保障。本文提出优选管柱技术,通过临界携液流量计算分析、井筒压力损失计算分析、冲蚀流量计算分析三方面的计算研究,建立管柱优选方法,并对靖边气田×_1井的实际应用进行了效果评价,对优选管柱技术在靖边气田的应用前景进行了展望,为靖边气田携液困难井的助排措施提供新的思路。

Sulige gas field located in the Maomsu desert,where the area is low temperature, longe duration and thick permafrost in winter, Gas pipelines are affected by the topography, depth,delivery pressure and ambient temperature, so the pipelines are frequently blocked during the whole winter, the blockage severly affected the normal function of well productivity. In recent years Sulige gas field continues to explore research on deplugging technology, and strives to solve the bottleneck problem in winter, This paper analyzed the reasons for blockage, described blockage positioned technologyand evaluated the traditional deplugging methods,analyzed and summarized the application of tests of the new electromagnetic induction heating deplugging technology in Sulige gas field in the past two years. In oder to seek a clean and environmentally, high efficiency and low-power deplugging method for the gas field.

靖边气田生产后期修井维护作业中,工作液漏失会造成固相堵塞、润湿反转、微粒运移和结垢、产液乳化等问题,将严重破坏和伤害储层,导致排液复产困难,因此优选一种适合靖边气田的修井暂堵液显得尤为重要和紧迫。此科研针对靖边气田储层岩性特征,在对绒囊暂堵液体系理论研究的基础上,进行了大量的绒囊暂堵液基液配方筛选和处理剂加量优选实验,研制出了具有良好的盐稳定性、抗温性、耐腐蚀性、暂堵能力以及对靖边气田储层低伤害性的绒囊暂堵液体系,同时在此基础上对暂堵液体系进行室内小样实验评价和室外模拟地层环境的暂堵和返排实验,最终确定了适合靖边气田修井作业的暂堵液体系配方,为今后靖边气田气井井下作业工作的开展建立了技术储备,具有一定的指导意义。

随着靖边气田的开发和天然气的不断采出,地层压力逐渐降低,气井由于地层能量低、储层物性差、产水等因素的影响,导致部分气井产量降低,本文主要介绍了目前在靖边气田应用的喷射引流、排水采气、气举、储层及井筒解堵等4种气井增产的方法。

In recent years,solid foam drainage stick has been widely applied to weak-blowout water-producing gas wells in Jingbian gasfield and obtains a certain success.Certainly,there are some defects,including,the solid one not achieving an expected result for gas wells featured by low pressure,small capacity and serious liquid loading,as well as yield-free and dying gas wells;and even occurring blockage.So,in this paper,a new self-foaming drainage stick (UT-6B) is selected,and its drainage effect is compared with that of conventional ones.Moreover,the liquid-carrying capacity of the stick and its application prospect are also demonstrated.The new stick may provide another option for foam drainage gas recovery in Jingbian gasfield.

In this paper,For the actual production status of water wells with high salinity formation in Jingbian gas field,Cluster analysis was used to conduct water production wells classification,Foaming pharmacy systematic evaluation method was used to evaluate and optimize the foaming pharmacy suitable for water wells in Jingbian gas field with foam drainage gas,Also a reasonable parameters is determined.simultaneously,the ground process matched with foam drainage gas is optimized and consummated in this paper. Finally,gas wells are optimized to conduct the field test and achieve good effects.

分离器是目前气田集输工艺中处理天然气中液体和固体杂质的主要设备。目前气田开采主要应用的是双筒卧式重力分离器,今年我厂引入了强吸旋流气液分离器,其对重力分离、吸附分离、离心分离和聚结分离的综合应用,可以进一步提高气液分离效率,其对雾状液滴有较强的聚结能力。